Express.js響應未定義錯誤

Question

我試圖實現一個簡單的登錄，但有一個小問題。 bcrypt返回response，所以當我嘗試res.send("stuff")時，它會返回一個錯誤，因爲它認爲我試圖訪問res對象的屬性而不是express.js的響應功能。 （如我錯了請糾正我）。

ReferenceError: response is not defined at authController.js:79:21

exports.loginModalPost = function (req, res) { 
    // post 
    var email = req.body.email; 
    var password = req.body.password; 

    // email & password validation. 
    user.where('email', email).fetch().then(function (data) { 
     if (data) { 
      data = data.toJSON(); 
      bcrypt.compare(password, data.password_hash, function (err, res) { 
       if(res === true) { 
        res.send("login is valid"); 
       } else { 
        // return err, but don't say that password is wrong to the end user. 
        res.send("password is wrong"); 
       } 
      }); 
     } else { 
      // email is wrong, no need to check password. 
      // return err, but don't say that email is wrong. 
      res.send("email is wrong"); 
     } 
    }); 
}; 

Answer 1

第二個參數res在compare方法的回調，與快遞的響應對象res衝突，你不能在一個範圍內聲明相同的變量名。

只需更新您的代碼如下圖所示：

bcrypt.compare(password, data.password_hash, function (err, result) { 
       if(result === true) { 
        res.send("login is valid"); 
       } else { 
        // return err, but don't say that password is wrong to the end user. 
        res.send("password is wrong"); 
       } 
      });